[BAracer]

All (but mainly That Slot Car Dude!)

I found this on an Austrian website SCD...

   

If it allows you to put a camber to your tyres, then I want one!

Three questions: -

Is that what it does?

Any idea if they are still manufactured, as this is the only image of one I can find?

Does anyone have one to sell second hand?

Thank you.

[OXO cube]

do you have a 3d printer Jeremy  ?

Camber adjustment HUDY by one_humanoid - Thingiverse
 
could be worth a shot m8 

Kev

[BAracer]

Looks like it's a thing then.

No printy thing in this house.

[KensRedZed]

The article begins with "The HUDY tire truer has a little bit of adjustment to the camber of your tire, but not enough for the rubber tires we run on our BRM 1/24 cars."

For me. The Hudy has enough camber adjustment for urethane tires on a 1/24 scale tire. Just loosen the bolts holding the wheel cradle, give it a twist, and re-tighten it. It's all hand profiling beyond that.

Maybe foam and/or rubber tires are different?

[BAracer]

I have my Hudy perfectly set up for parallel grinding...if i tweak it to do a camber, i will never get it parallel ever again!...

[merkit the grof]

Can I ask what the benefits of having conical tyres are? And what angle would you use?


Joel

[Kevan]

what he said ^

[BAracer]

So this is the theory as I understand it. It was suggested to me by a very competent car builder, but i have also been challenged on the concept by another very competent car builder.

You are racing on a wood track, with a stiff chassis, on rubber tyres which have been trued nice and flat. You are pushing and the inside front wheel lifts in a corner.........

The chassis will transfer that lift to the rear wheels, and the inside wheel also lifts, leaving the outer edge of the outer rear tyre being the only contact point between car and track, so the car will probably over-steer off.

In theory, if you have trued a section of camber to the outer portion of your rear tyres, when the front tyre lifted, rather than the rear tyre only having the outer edge in contact with the track, the tyre would still have the cambered portion of it's width in contact with the track, with less risk of the rear breaking away.

Just a theory, and in effect, you are truing your tyres to deal with a failure in the handling.

I haven't tried it yet, still thinking about it...

[Kevan]

The way I see it...If your car is lifting both inside tyres, the chassis is either too rigid, pod too tight, car too lightweight...or you're over driving the car.

I know when my cars are set up right when both rear tyres start to polish shiny which increases grip allowing you to push harder and reduce lap times.

There's no way I'd purposely set a car up with reduced tyre contact patch as that's going to hamper cornering speed... that's how I see it anyway, but I do know from our different racing classes that narrow tyres with smaller footprints can't corner at the high speeds that cars with wide tyres can achieve.

...but remember that rubber tyres flex anyway whether they're trued flat or not.

[merkit the grof]

Cornering on 2 wheels, surely, most people would have noticed. In which case why is Hudy advising people to set the drum parallel? Seems strange giving the wrong advice.
   


Joel